I have Windows XP installed and I cannot get my Petz game to run.
Unfortunately, Windows XP is not a supported operating system for any of the Petz games. It may be possible, however, to run your game in this operating system with the latest Petz patch. Please visit http://www.petz.com/demopatch.html to download and install the latest patch for Petz 4. This new patch provides support for Windows 2000 and XP.